Hi Experts,In my scenario, Caller is ISDN-SIP gateway,Callee receieves
INVITE request and responds with 18X response. Callee TU want to specify that
18X should not be mapped to equivalent QSIG message at Caller TU.Is there any
mechanism in SIP (extention/ Header/ Header-param) by which UAS can tell UAC to
treat the 18X specially ? (not to map the 18X to ISDN in my case). Thus
Callee would check this mechanism and then make decisionThe mechanism could be
application specific. (as TU is involvedin sending 18X)Thanks in Advance ,Jayesh
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